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Outdoors · Guess the stat

How well do you know scuba diving?

Guess the real numbers behind scuba diving, see how everyone else guessed, and get the source.

Guess the statOne tap · see how everyone guessed

Underwater, pressure increases by one atmosphere for roughly every how many feet of seawater?

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Today's round

  • 4 stats to guess
  • 1 opinion poll
  • 0 played today

Guess, see the crowd, get the real number. One ranked attempt per day.

Scuba by the numbers

Real figures with their sources. All Scuba facts →

1966

When was PADI (Professional Association of Diving Instructors) founded?

It was founded by divers John Cronin and Ralph Erickson.

Source: PADI padi.com

128,000

About how many PADI professional members (instructors and dive leaders) are there worldwide?

PADI divers train at about 6,600 dive centers and resorts around the globe.

Source: PADI padi.com

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One Scuba stat a week

A surprising, sourced scuba diving number and that week's poll, in your inbox every Monday. Free, and you can stop any time.

Questions

How does ScubaSurvey.com work?

Each question asks you to guess a real number about scuba diving. After you answer you see how everyone else guessed, then the real figure and where it comes from.

How is the daily round scored?

Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.

Where do the numbers come from?

Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.

Is it free?

Yes. Playing, streaks, badges and leaderboards are free, and your votes stay anonymous.